Rank	Countries/Territories	Count	Percent
1	United States	433	45.1%
2	China	212	22.1%
3	Germany	130	13.5%
4	Canada	28	2.9%
5	France	21	2.2%
6	United Kingdom	18	1.9%
7	Poland	14	1.5%
8	Norway	11	1.1%
9	Peru	10	1%
10	Russia	8	0.8%
11	Singapore	8	0.8%
12	Japan	7	0.7%
13	India	7	0.7%
14	Australia	6	0.6%
15	Romania	6	0.6%
16	Switzerland	5	0.5%
17	Korea, Republic of	4	0.4%
18	Latvia	4	0.4%
19	Netherlands	4	0.4%
20	Hong Kong	3	0.3%
21	Iran, Islamic Republic of	2	0.2%
22	Ireland	2	0.2%
23	South Africa	2	0.2%
24	Sweden	2	0.2%
25	Ukraine	2	0.2%
26	Spain	1	0.1%
27	Taiwan	1	0.1%
28	Malaysia	1	0.1%
29	Italy	1	0.1%
30	Hungary	1	0.1%
31	Greece	1	0.1%
32	Brazil	1	0.1%
33	Argentina	1	0.1%
34	Cuba	1	0.1%
35	Cyprus	1	0.1%
36	Czech Republic	1	0.1%
37	Egypt	1	0.1%